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Production of bg65mn steel for ball mill grinding rods by electric furnace continuous casting and its preparation method

A technology of ball mill and continuous casting, applied in the direction of electric furnace, furnace, furnace type, etc., can solve the problem of less grinding rods, achieve the effect of improving product quality, reducing energy consumption, and ensuring fluidity

Active Publication Date: 2019-12-24
BENGANG STEEL PLATES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic steel mills produce a lot of steel for ball mill balls, but very little steel for grinding rods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Electric furnace continuous casting produces BG65Mn steel for ball mill grinding rods, by weight percentage, including the following components: C: 0.64%, Si: 0.20%, Mn: 1.05%, Cr: 0.22%, Alt: 0.020%, and the rest is iron and unavoidable impurities.

[0017] The method for preparing the above-mentioned electric furnace continuous casting to produce ball mill grinding rods with BG65Mn steel:

[0018] Raw materials are pretreated in turn→electric furnace smelting→refining furnace LF→vacuum degassing VD→medium billet continuous casting 235mm×265mm continuous casting slab→walking heating furnace heating→high pressure water descaling→rough rolling mill rolling→continuous rolling unit→ Slow cooling→finishing→flaw detection→inspection to obtain steel,

[0019] In the LF process of the refining furnace, control FeO+MnO≤1% to obtain white slag, which lasts for more than 15 minutes;

[0020] In the vacuum degassing VD process, the vacuum lasts for more than 25 minutes;

[0021...

Embodiment 2

[0023] Electric furnace continuous casting produces BG65Mn steel for ball mill grinding rods, by weight percentage, including the following components: C: 0.67%, Si: 0.35%, Mn: 1.15%, P: 0.020%, S: 0.015%, Cr: 0.28% , Cu: 0.15%, Alt: 0.035%, and the rest are iron and unavoidable impurities.

[0024] The method for preparing the above-mentioned electric furnace continuous casting to produce ball mill grinding rods with BG65Mn steel:

[0025] Raw materials are pretreated in turn→electric furnace smelting→refining furnace LF→vacuum degassing VD→medium billet continuous casting 235mm×265mm continuous casting slab→walking heating furnace heating→high pressure water descaling→rough rolling mill rolling→continuous rolling unit→ Slow cooling→finishing→flaw detection→inspection to obtain steel,

[0026] In the LF process of the refining furnace, control FeO+MnO≤1% to obtain white slag, which lasts for more than 15 minutes;

[0027] In the vacuum degassing VD process, the vacuum lasts...

Embodiment 3

[0030] Electric furnace continuous casting produces BG65Mn steel for ball mill grinding rods, by weight percentage, including the following components: C: 0.65%, Si: 0.30%, Mn: 1.10%, P: 0.015%, S: 0.010%, Cr: 0.26% , Cu: 0.05%, Alt: 0.030%, and the rest are iron and unavoidable impurities.

[0031] The method for preparing the above-mentioned electric furnace continuous casting to produce ball mill grinding rods with BG65Mn steel:

[0032] Raw materials are pretreated in turn→electric furnace smelting→refining furnace LF→vacuum degassing VD→medium billet continuous casting 235mm×265mm continuous casting slab→walking heating furnace heating→high pressure water descaling→rough rolling mill rolling→continuous rolling unit→ Slow cooling→finishing→flaw detection→inspection to obtain steel,

[0033] In the LF process of the refining furnace, control FeO+MnO≤1% to obtain white slag, which lasts for more than 15 minutes;

[0034] In the vacuum degassing VD process, the vacuum lasts...

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PUM

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Abstract

The invention belongs to the technical field of special steel material preparation, and particularly provides BG65Mn steel for a grinding rod of a ball mill for electric furnace continuous casting production and a preparation method thereof. The BG65Mn steel comprises the following components by weight: 0.64-0.67% of C, 0.20-0.35% of Si, 1.05-1.15% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.22-0.28% of Cr, less than or equal to 0.15% of Cu, 0.020-0.035% of Alt, and balance of iron and unavoidable impurities. The BG65Mn steel fills the technical blank of thesteel for the grinding rod of the ball mill in China.

Description

technical field [0001] The invention belongs to the technical field of preparation of special steel materials, and in particular provides BG65Mn steel for producing grinding rods of ball mills by electric furnace continuous casting and a preparation method thereof. Background technique [0002] With the continuous improvement of my country's mining capacity, the demand for steel for ball mill grinding rods used to crush ore is also increasing year by year. Among them, the demand for steel for grinding rods of ball mills is growing rapidly, and the requirements for product quality are getting higher and higher. At present, domestic steel mills produce a lot of steel for ball mill balls, but very little steel for grinding rods. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an electric furnace continuous casting to produce BG65Mn steel for grinding rods of ball mills and a preparation method thereof, which f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/20C22C38/02C22C38/04C22C38/06B22D11/111B22D11/115B22D11/12B22D11/22C21C5/52C21C7/10C22C33/04
CPCB22D11/111B22D11/115B22D11/122B22D11/225C21C5/52C21C7/10C22C33/04C22C38/02C22C38/04C22C38/06C22C38/18C22C38/20Y02P10/20
Inventor 张群赵千水宋满堂
Owner BENGANG STEEL PLATES
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